The wide end and light lenses are the obvious places mirrorless pays off, so these lenses fit that strategy. I don't see long lenses or macro lenses for a while since the adapter allows F-Mount lenses. The other pretty obvious strategy is to target wedding and portrait shooters - groups where lighter and smaller gear is important.

The 14-30 f/4 looks pretty good as a light travel and landscape lens, but for me it's very hard to justify unless the Z becomes my primary camera. I have four current F-mount lenses covering 20mm and wider.